Pre-Algebra Exam Final

After replacing the values for the variables, what do you do to evaluate the numerical expression?

• Follow the order of operations

• Substitute the values for the variables

Simplify:

5 + 2 x 7

• 49

• 19

• 42

• 45

Find and explain the error.    
 5 - 3 + 2
     5 - 5
        0

• There is no error.

• Addition was done first and you should have subtracted first

• There is a subtraction error

What is the value of this expression? 
5 x 4 + 8 x 7 

• 168

• 84

• 76

• 59

w = 7

(w + 3) ÷ (10 ÷ 2)

Which expression has a value of 13?

• 5 + 4 × 3 − 1

• (5+4)×3−1

• 5+4×(3−1)

• (5+4)×(3−1)

What is the first step in the problem shown? 

• Multiplication

• Addition

Mr. Smith has 4 daughters. Each of his daughters have a brother. How many children does Mr. Smith have?

• 8

• 7

• 9

• 5

Shiann brought $30 to the mall and spent $14 on a softball and $6 for a snack.

How much money does she have left?

• $16

• $4

• $10

• $20

Mayo had 17 cookies. He ate 5 of them. Then, he split the remaining cookies with 3 friends.

How many cookies did each of his friends get?

• 3

• 5

• 4